Carbon dioxide capture system and marine system
Patent Information
- Application Number
- CN202522414079.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-13
AI Technical Summary
[0004]然而，溶液吸收法需要消耗大量热能用于溶液再生，导致能源消耗高
[0025]本申请实施例提供的二氧化碳捕集系统及船舶系统，二氧化碳捕集系统包括捕集器、第一换热器和第一发电组件。捕集器具有进气口和出气口，进气口用于与船舶的尾气出口连通，捕集器内填充有固体吸附物，固体吸附物用于吸收尾气出口输出的尾气中的二氧化碳。第一换热器内具有第一流道和第一换热通道，第一流道的进口端与出气口连通。第一换热通道内具有第一换热介质，第一换热介质用于吸收第一流道内的尾气的热量并气化。第一发电组件包括第一膨胀机和第一发电设备，第一膨胀机的进口与用于与第一换热通道的出口端连通，第一膨胀机还与第一发电设备连接，第一发电设备用于为船舶的用电设备供电。通过固体吸附物对船舶尾气中的二氧化碳进行捕集，相较于溶液吸收法捕集二氧化碳，能够减少液体循环和液体存储装置的空间占用。同时，尾气携带的热量能够被第一换热介质吸收，第一换热介质受热气化后形成高压气体驱动第一膨胀机运转，第一膨胀机带动第一发电设备将热能转化为电能，产生的电能可以直接供给船舶使用，实现了对尾气废热的利用。
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Figure CN224912072U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of marine technology, and in particular to a carbon dioxide capture system and a marine system. Background Technology
[0002] As a primary means of water transport, ships generate carbon dioxide during operation. To achieve emission reduction targets, ships cannot directly release carbon dioxide into the atmosphere while operating at sea; instead, carbon dioxide in their exhaust gases must be captured.
[0003] In related technologies, solution absorption is commonly used to capture carbon dioxide from ship exhaust. Solution absorption uses a chemical solution that reacts with carbon dioxide, bringing the solution into contact with the engine exhaust to absorb the carbon dioxide. The carbon dioxide-absorbed solution is then transported to a regeneration unit, where heating releases the carbon dioxide from the solution, yielding a high-concentration carbon dioxide gas. The released carbon dioxide gas is then compressed and cooled, converting it into liquid carbon dioxide, which is stored in high-pressure tanks on board.
[0004] However, solution absorption requires a large amount of heat energy for solution regeneration, resulting in high energy consumption. Furthermore, equipment such as compressors and storage tanks occupy a significant amount of space. Therefore, reducing energy consumption and minimizing equipment footprint in the carbon dioxide capture process has become a pressing technical challenge. Utility Model Content
[0005] This application provides a carbon dioxide capture system and a ship system that can reduce energy consumption in the carbon dioxide capture process and reduce the space occupied by the equipment.
[0006] In a first aspect, embodiments of this application provide a carbon dioxide capture system, comprising:
[0007] The trap has an air inlet and an air outlet. The air inlet is used to connect with the exhaust gas outlet of the ship. The trap is filled with solid adsorbent, which is used to absorb carbon dioxide in the exhaust gas output from the exhaust gas outlet.
[0008] The first heat exchanger has a first flow channel and a first heat exchange passage. The inlet end of the first flow channel is connected to the outlet. The first heat exchange passage contains a first heat exchange medium, which is used to absorb the heat of the exhaust gas in the first flow channel and vaporize it.
[0009] The first power generation assembly includes a first expander and a first power generation device. The inlet of the first expander is connected to the outlet end of the first heat exchange channel. The first expander is also connected to the first power generation device, which is used to supply power to the ship's electrical equipment.
[0010] In one possible implementation, the trap has opposing top and bottom walls in the height direction, with the air inlet located in the region of the trap adjacent to the bottom wall and the air outlet located in the region of the trap adjacent to the top wall.
[0011] In one possible implementation, the trap has opposing top and bottom walls in the height direction, with the air inlet located on the bottom wall;
[0012] The air outlet is located in the area near the top wall of the trap, or the air outlet is located on the top wall.
[0013] In one possible implementation, the first expander is coaxially connected to a first power generation device, which is used to electrically connect the ship's power generation system.
[0014] In one possible implementation, the carbon dioxide capture system further includes:
[0015] The second heat exchanger has a second flow channel and a second heat exchange passage. The inlet end of the second flow channel is connected to the outlet of the first expander. The second heat exchange passage contains a second heat exchange medium, which is used to absorb the heat of the first heat exchange medium in the second flow channel to liquefy the first heat exchange medium.
[0016] In one possible implementation, the second heat exchange medium includes seawater, the inlet end of the second heat exchange channel is used to receive seawater, and the outlet end of the second heat exchange channel is used to discharge the heat-exchanged seawater into the ocean.
[0017] In one possible implementation, the carbon dioxide capture system further includes:
[0018] The pump body has its inlet connected to the outlet of the second flow channel and its outlet connected to the inlet of the first heat exchange channel, and is used to pump the first heat exchange medium into the first heat exchange channel.
[0019] In one possible implementation, the first expander includes a turbine expander.
[0020] In one possible implementation, the carbon dioxide capture system further includes:
[0021] The second power generation assembly includes a second expander and a second power generation device. The inlet of the second expander is connected to the outlet of the trap. The second expander is also connected to the second power generation device, which is used to supply power to the ship's electrical equipment. The outlet of the second expander is connected to the first flow channel.
[0022] Secondly, embodiments of this application provide a ship system, including:
[0023] Ships, ships have exhaust outlets;
[0024] As in any of the above embodiments, the carbon dioxide capture system includes a trap, the inlet of which is connected to the exhaust outlet.
[0025] The carbon dioxide capture system and ship system provided in this application include a capture device, a first heat exchanger, and a first power generation component. The capture device has an inlet and an outlet, the inlet being connected to the ship's exhaust outlet. The capture device is filled with a solid adsorbent, which absorbs carbon dioxide from the exhaust gas output from the outlet. The first heat exchanger has a first flow channel and a first heat exchange passage, the inlet of which is connected to the outlet. The first heat exchange passage contains a first heat exchange medium, which absorbs heat from the exhaust gas in the first flow channel and vaporizes it. The first power generation component includes a first expander and a first power generator. The inlet of the first expander is connected to the outlet of the first heat exchange passage, and the first expander is also connected to the first power generator, which supplies power to the ship's electrical equipment. Capturing carbon dioxide from ship exhaust gas using a solid adsorbent reduces the space required for liquid circulation and storage devices compared to solution absorption methods. Meanwhile, the heat carried by the exhaust gas can be absorbed by the first heat exchange medium. After being heated and vaporized, the first heat exchange medium forms a high-pressure gas that drives the first expander to operate. The first expander drives the first power generation equipment to convert the heat energy into electrical energy. The generated electrical energy can be directly supplied to the ship, thus realizing the utilization of exhaust gas waste heat. Attached Figure Description
[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0027] Figure 1 A schematic diagram of the carbon dioxide capture system provided in the embodiments of this application. Figure 1 ;
[0028] Figure 2 A schematic diagram of the carbon dioxide capture system provided in the embodiments of this application. Figure 2 .
[0029] Explanation of reference numerals in the attached figures:
[0030] 10-Electrical equipment;
[0031] 20 - Exhaust gas outlet;
[0032] 100-Catcher;
[0033] 200 - First heat exchanger;
[0034] 300 - First power generation component; 310 - First expander; 320 - First power generation equipment;
[0035] 400 - Pump body;
[0036] 500 - Second power generation component; 510 - Second expander; 520 - Second power generation equipment;
[0037] 600 - Second heat exchanger.
[0038] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0039] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of the embodiments of this application.
[0040] In the embodiments of this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing the embodiments of this application and their implementations, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. For those skilled in the art, the specific meaning of these terms in the embodiments of this application can be understood according to the specific circumstances.
[0041] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.
[0042] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein.
[0043] In this application, the terms "exemplarily" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplarily" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.
[0044] Unless otherwise stated, the term "multiple" means two or more.
[0045] As a primary means of water transport, ships generate carbon dioxide during operation. To achieve emission reduction targets, ships cannot directly release carbon dioxide into the atmosphere while operating at sea; instead, carbon dioxide in their exhaust gases must be captured.
[0046] In related technologies, solution absorption is commonly used to capture carbon dioxide from ship exhaust. Solution absorption uses a chemical solution that reacts with carbon dioxide, bringing the solution into contact with the engine exhaust to absorb the carbon dioxide. The carbon dioxide-absorbed solution is then transported to a regeneration unit, where heating releases the carbon dioxide from the solution, yielding a high-concentration carbon dioxide gas. The released carbon dioxide gas is then compressed and cooled, converting it into liquid carbon dioxide, which is stored in high-pressure tanks on board.
[0047] However, solution absorption requires a large amount of heat energy for solution regeneration, resulting in high energy consumption. Furthermore, equipment such as compressors and storage tanks occupy a significant amount of space. Therefore, reducing energy consumption and minimizing equipment footprint in the carbon dioxide capture process has become a pressing technical challenge.
[0048] In view of this, this application provides a carbon dioxide capture system and a ship system. The carbon dioxide capture system includes a capture device, a first heat exchanger, and a first power generation component. The capture device has an inlet and an outlet. The inlet is connected to the ship's exhaust gas outlet. The capture device is filled with a solid adsorbent, which absorbs carbon dioxide from the exhaust gas output from the outlet. The first heat exchanger has a first flow channel and a first heat exchange passage. The inlet of the first flow channel is connected to the outlet. The first heat exchange passage contains a first heat exchange medium, which absorbs heat from the exhaust gas in the first flow channel and vaporizes it. The first power generation component includes a first expander and a first power generation device. The inlet of the first expander is connected to the outlet of the first heat exchange passage. The first expander is also connected to the first power generation device, which supplies power to the ship's electrical equipment. Capturing carbon dioxide from ship exhaust gas using a solid adsorbent reduces the space occupied by liquid circulation and liquid storage devices compared to solution absorption methods. Meanwhile, the heat carried by the exhaust gas can be absorbed by the first heat exchange medium. After being heated and vaporized, the first heat exchange medium forms a high-pressure gas that drives the first expander to operate. The first expander drives the first power generation equipment to convert the heat energy into electrical energy. The generated electrical energy can be directly supplied to the ship, thus realizing the utilization of exhaust gas waste heat.
[0049] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.
[0050] Please refer to Figure 1 This application provides a carbon dioxide capture system, including a capture device 100, a first heat exchanger 200, and a first power generation component 300.
[0051] The trap 100 has an air inlet and an air outlet. The air inlet is used to communicate with the exhaust gas outlet 20 of the ship. The trap 100 is filled with a solid adsorbent, which is used to absorb carbon dioxide in the exhaust gas output from the exhaust gas outlet 20.
[0052] Specifically, when the ship's engine generates exhaust gas, the exhaust gas enters the inlet of the collector 100 through the exhaust gas outlet 20. The solid adsorbent can adsorb the carbon dioxide in the exhaust gas. After adsorption, the gas is discharged from the carbon dioxide capture system through the outlet, thereby achieving the separation and capture of carbon dioxide and preventing carbon dioxide from being directly released into the atmosphere.
[0053] It should be noted that the exhaust gas treated by the carbon dioxide capture system includes rich gas and lean gas. Rich gas refers to untreated exhaust gas with a high carbon dioxide concentration, while lean gas refers to gas with a reduced carbon dioxide concentration after adsorption treatment. When the ship's engine generates rich gas, the rich gas enters the inlet of the capture device 100 through the exhaust gas outlet 20. Inside the capture device 100, the rich gas comes into contact with the solid adsorbent, which adsorbs the carbon dioxide in the rich gas to form lean gas. The lean gas is then discharged from the carbon dioxide capture system through the outlet of the capture device 100.
[0054] In this embodiment, the solid adsorbent can be at least one of magnesium oxide, calcium oxide, magnesium hydroxide, or calcium hydroxide. All of the above solid adsorbents are alkaline and can react chemically with acidic carbon dioxide in the exhaust gas to form stable carbonates, thereby achieving chemical adsorption.
[0055] In other embodiments, the solid adsorbent may also be a molecular sieve. Molecular sieves have nanoscale pores, enabling selective adsorption of carbon dioxide molecules through pore size sieving and surface adsorption forces.
[0056] It is understood that this embodiment does not limit the specific types of solid adsorbents, and those skilled in the art can make adaptive selections according to actual needs.
[0057] The first heat exchanger 200 has a first flow channel and a first heat exchange passage, with the inlet end of the first flow channel connected to the outlet. The first heat exchange passage contains a first heat exchange medium, which is used to absorb the heat of the exhaust gas in the first flow channel and vaporize it.
[0058] Specifically, when lean gas enters the first flow channel from the outlet of the trap 100, it exchanges heat with the first heat exchange medium in the first heat exchange channel. After absorbing the heat transferred by the lean gas, the temperature of the first heat exchange medium rises. When the temperature reaches the boiling point of the first heat exchange medium, the first heat exchange medium can change from a liquid state to a gaseous state.
[0059] In this embodiment, the first power generation component 300 includes a first expander 310 and a first power generation device 320. The inlet of the first expander 310 is connected to the outlet end of the first heat exchange channel. When the high-temperature and high-pressure first heat exchange medium formed by vaporization in the first heat exchange channel enters the inlet of the first expander 310 from the outlet end of the first heat exchange channel, the first heat exchange medium expands and does work in the first expander 310, driving the first expander 310 to operate and converting it to a high-temperature and low-pressure state.
[0060] Specifically, the first expander 310 is equipped with an impeller, and the first heat exchange medium can impact the impeller and cause it to rotate. The first expander 310 is also connected to the first power generation equipment 320. When the impeller rotates, it can drive the first power generation equipment 320 to operate and generate electricity to supply power to the ship's electrical equipment 10.
[0061] By adopting the carbon dioxide capture system provided in this embodiment, compared with the solution absorption method for capturing carbon dioxide, there is no need to set up multiple liquid storage tanks to store carbon dioxide, thus reducing the space occupied by the carbon dioxide capture system on the ship. At the same time, the carbon dioxide capture system generates electricity by recovering waste heat from lean gas, and the generated electricity can be directly used by the ship's electrical equipment 10, reducing the overall energy consumption of ship operation.
[0062] Please refer to Figure 1 In some embodiments, the trap 100 has opposing top and bottom walls in the height direction, with the air inlet located in the region of the trap 100 adjacent to the bottom wall and the air outlet located in the region of the trap 100 adjacent to the top wall.
[0063] Specifically, when the rich gas enters through the inlet at the bottom of the collector 100, it naturally flows upwards due to its higher temperature and lower density, driven by buoyancy. As it rises, the rich gas passes through the solid adsorbent, allowing it to fully absorb the carbon dioxide. After carbon dioxide adsorption, the rich gas becomes lean gas, which continues to rise to the top of the collector 100 and is eventually discharged from the outlet at the top. This increases the contact area between the solid adsorbent and the rich gas, and extends the flow path of the rich gas within the collector 100, resulting in more complete adsorption of carbon dioxide and thus improving the collection efficiency of the collector 100.
[0064] Please refer to Figure 1 In some embodiments, the trap 100 has opposing top and bottom walls in the height direction, with the air inlet located on the bottom wall to further extend the contact path between the gas-rich and solid adsorbents and improve the adsorption efficiency of carbon dioxide.
[0065] Meanwhile, in this embodiment, the gas outlet can be located in the area adjacent to the top wall of the trap 100, or it can be located directly on the top wall, so as to further extend the contact path between the gas and the solid adsorbent and improve the adsorption efficiency of carbon dioxide.
[0066] Please refer to Figure 1 and Figure 2 In some embodiments, the first expander 310 is coaxially connected to the first power generation device 320, which is used to electrically connect the ship's power generation system.
[0067] Specifically, when the first expander 310 is driven to rotate by the first heat exchange medium, the rotating shaft can transmit torque to the first power generation device 320, driving the rotor inside the first power generation device 320 to rotate synchronously and cut magnetic field lines to generate induced current. The generated electrical energy is transmitted to the ship's electrical equipment 10 through the circuit, thereby realizing the utilization of waste heat in the exhaust gas.
[0068] The electrical energy generated by the first power generation equipment 320 can be directly transmitted to the ship's power grid to provide power to the ship's electrical equipment 10.
[0069] Please refer to Figure 1 In some embodiments, the carbon dioxide capture system further includes a second heat exchanger 600. The second heat exchanger 600 has a second flow channel and a second heat exchange passage, the inlet end of the second flow channel being connected to the outlet of the first expander 310. The second heat exchange passage contains a second heat exchange medium, which absorbs heat from the first heat exchange medium in the second flow channel to liquefy the first heat exchange medium.
[0070] Specifically, the first heat exchange medium discharged from the outlet of the first expander 310 enters the second flow channel of the second heat exchanger 600, where it exchanges heat with the second heat exchange medium in the second heat exchange channel and cools down. When the temperature of the first heat exchange medium drops below its own freezing point, the first heat exchange medium can change from a gaseous phase to a liquid phase. The liquefied first heat exchange medium is transported back to the inlet of the first heat exchange channel of the first heat exchanger 200 through the return pipe, thus forming a complete circulation loop.
[0071] Please refer to Figure 1 In some embodiments, the second heat exchange medium includes seawater, the inlet end of the second heat exchange channel is used to receive seawater, and the outlet end of the second heat exchange channel is used to discharge the heat-exchanged seawater into the ocean.
[0072] Specifically, when the ship is sailing, it can directly draw seawater from the surrounding ocean as a second heat exchange medium. As the seawater flows through the second heat exchange channel, it absorbs heat from the first heat exchange medium. The heated seawater is then directly discharged back into the ocean. This direct use of seawater as a second heat exchange medium eliminates the need for additional storage and replenishment costs for the second heat exchange medium, thus reducing the overall operating cost of the carbon dioxide capture system.
[0073] Please refer to Figure 1 In some embodiments, the carbon dioxide capture system further includes a pump body 400, the inlet of which is connected to the outlet end of the second flow channel, and the outlet of which is connected to the inlet end of the first heat exchange channel, for pumping the first heat exchange medium into the first heat exchange channel.
[0074] Specifically, after the first heat exchange medium liquefies in the second heat exchanger 600, the pump body 400 can pump the liquid first heat exchange medium out from the outlet of the second flow channel to provide the flow power for the first heat exchange medium. The first heat exchange medium is transported through pipeline to the inlet end of the first heat exchange channel to re-enter the first heat exchange channel and participate in the circulation.
[0075] Meanwhile, the pump body 400 can also adjust the flow rate and volume of the first heat exchange medium in the loop, thereby adjusting the heat exchange capacity of the carbon dioxide capture system according to the temperature or other actual changes in the ship's exhaust gas, ensuring the stability of exhaust gas waste heat recovery.
[0076] Please refer to Figure 1 In some embodiments, the first expander 310 includes a turbine expander.
[0077] Specifically, the turboexpander contains nozzles and an impeller. When the high-temperature, high-pressure first heat exchange medium enters the turboexpander, it first passes through the nozzle. The channel inside the nozzle reduces the pressure of the first heat exchange medium and increases its flow velocity, forming a high-speed jet. The high-speed jet impacts the impeller blades, driving the impeller to rotate, thereby converting the thermal and pressure energy of the first heat exchange medium into the rotational mechanical energy of the impeller.
[0078] Please refer to Figure 1 and Figure 2 In some embodiments, the carbon dioxide capture system further includes a second power generation assembly 500. The second power generation assembly 500 includes a second expander 510 and a second power generator 520. The inlet of the second expander 510 is connected to an outlet for communication with the capture device 100. The second expander 510 is also connected to the second power generator 520, which supplies power to the ship's electrical equipment 10. The outlet of the second expander 510 is connected to a first flow channel.
[0079] Specifically, after the carbon dioxide adsorption is complete, the lean gas formed is discharged from the outlet of the collector 100 and enters the second expander 510. The lean gas expands and performs work within the second expander 510, driving its operation and powering the second power generation device 520 to generate electricity. After completing its expansion, the lean gas exits from the outlet of the second expander 510 and enters the first flow channel of the first heat exchanger 200, where its waste heat is used to heat the first heat exchange medium. This fully utilizes the pressure and thermal energy of the lean gas, improving the energy recovery efficiency of the carbon dioxide capture system.
[0080] Similarly, in this embodiment, the second expander 510 can also be a turbine expander.
[0081] Please refer to Figure 1This application also provides a ship system, including a ship and a carbon dioxide capture system as described in any of the above embodiments. The ship has an exhaust outlet 20, and the carbon dioxide capture system includes a trap 100, the air inlet of which is connected to the exhaust outlet 20.
[0082] Specifically, the ship system provided in this application includes the aforementioned carbon dioxide capture system. Therefore, the ship system has the beneficial effects of a carbon dioxide capture system. By capturing carbon dioxide from ship exhaust gas using solid adsorbents, compared to solution absorption methods, it reduces the space occupied by liquid circulation and liquid storage devices. Simultaneously, the heat carried by the exhaust gas can be absorbed by the first heat exchange medium. After being heated and vaporized, the first heat exchange medium forms a high-pressure gas that drives the first expander 310. The first expander 310 drives the first power generation equipment 320 to convert thermal energy into electrical energy, which can be directly supplied to the ship, thus realizing the utilization of exhaust gas waste heat.
[0083] Finally, it should be noted that other embodiments of this utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of this utility model that follow the general principles of this utility model and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.
Claims
1. A carbon dioxide capture system, characterized in that, include: A trap having an air inlet and an air outlet, the air inlet being connected to the exhaust gas outlet of a ship, the trap being filled with a solid adsorbent for absorbing carbon dioxide in the exhaust gas output from the exhaust gas outlet. A first heat exchanger has a first flow channel and a first heat exchange passage. The inlet end of the first flow channel is connected to the outlet. The first heat exchange passage has a first heat exchange medium, which is used to absorb the heat of the exhaust gas in the first flow channel and vaporize it. The first power generation assembly includes a first expander and a first power generation device. The inlet of the first expander is connected to the outlet end of the first heat exchange channel. The first expander is also connected to the first power generation device, which is used to supply power to the ship's electrical equipment.
2. The carbon dioxide capture system according to claim 1, characterized in that, The trap has opposing top and bottom walls in the height direction, the air inlet is located in the region of the trap adjacent to the bottom wall, and the air outlet is located in the region of the trap adjacent to the top wall.
3. The carbon dioxide capture system according to claim 1, characterized in that, The trap has opposing top and bottom walls in the height direction, and the air inlet is located on the bottom wall; The air outlet is located in the region of the trap adjacent to the top wall, or the air outlet is located on the top wall.
4. The carbon dioxide capture system according to claim 1, characterized in that, The first expander is coaxially connected to the first power generation device, which is used to provide electrical connection for the ship's power generation system.
5. The carbon dioxide capture system according to claim 1, characterized in that, Also includes: The second heat exchanger has a second flow channel and a second heat exchange passage. The inlet end of the second flow channel is connected to the outlet of the first expander. The second heat exchange passage contains a second heat exchange medium, which is used to absorb the heat of the first heat exchange medium in the second flow channel to liquefy the first heat exchange medium.
6. The carbon dioxide capture system according to claim 5, characterized in that, The second heat exchange medium includes seawater, the inlet end of the second heat exchange channel is used to receive the seawater, and the outlet end of the second heat exchange channel is used to discharge the heat-exchanged seawater into the ocean.
7. The carbon dioxide capture system according to claim 5, characterized in that, Also includes: The pump body has its inlet connected to the outlet end of the second flow channel and its outlet connected to the inlet end of the first heat exchange channel, and is used to pump the first heat exchange medium into the first heat exchange channel.
8. The carbon dioxide capture system according to any one of claims 1-7, characterized in that, The first expander includes a turbine expander.
9. The carbon dioxide capture system according to any one of claims 1-4, characterized in that, Also includes: The second power generation assembly includes a second expander and a second power generation device. The inlet of the second expander is connected to the outlet of the trap. The second expander is also connected to the second power generation device, which supplies power to the ship's electrical equipment. The outlet of the second expander is connected to the first flow channel.
10. A ship system, characterized in that, include: The vessel has an exhaust outlet; The carbon dioxide capture system according to any one of claims 1-9, the carbon dioxide capture system includes a trap, the inlet of the trap being connected to the exhaust outlet.